Dental apparatus



Oct. 14, 1924. 1,511,422

C. H. PIEPER DENTAL APPARATUS Filed March 21 1923 ill Patented (lot. 14,1924.

UNITED STATES OSCAR I-I. PIEPER, OF ROCHESTER, L EVI YORK.

DENTAL APPARATUS.

Application filed. March 21, 1823.

To all whom it may concern:

Be it known that I, OSCAR H. PIEPER, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented certain new and useful Improvements in Dental Apparatus;and I do hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, forming a part of this specification, and to the referencenumerals marked thereon.

This invention relates to dental apparatus, and more particularly toequipment supporting means such as trays for holding hand implements,one object of the invention being to provide a simple, efiicient,durable and convenient instrument tray of the general variety of thatdisclosed in Letters Pat out No. 1,326,356, granted jointly to A. F.Pieper and myself April 26, 1921, for unitary dental apparatus. More,specifically stated, the invention has the further object of providing adevice of the above character in which a tray body is effectivelysupported and retained in position on a support in a convenientlydetachable manner and is advantageously constructed not only forcooperation with the support but also for safety against injury whencompactly assembled in quantity for shipment. To these and other endsthe invention consists in certain improvements and combinations ofparts, all as will be hereinafter more fully described, the novelfeatures being pointed out in the claims at the end of thespecification.

In the drawings:

Figure 1 is an elevation of a dental equipment apparatus or standprovided with an instrument tray embodying the present invention;

Figure 2 is an enlarged top plan view of the instrument tray, and

Figure 3 is a sectional elevation on the line 3-?) of Figure 2.

Similar reference numerals throughout the several views indicate thesame parts.

The invention is shown in the present instance, by way of illustration,as embodied in conjunction with an equipment supporting stand or colunm5 adapted to be located at the side of a dental chair opposite theoperator and carrying the various equipment desired, as fully shown anddescribed in the said Letters Patent.

Serial No. 626,574.

ing flange 11, thus providing a convenient tray or table for supportingthe various hand instruments or tools required in dentistry work. Theunder side 12 of the tray is formed with an abutment means preferably inthe form of a projecting circular flange 13, for purposes which willmore fully appear hereafter.

The supporting means for the tray body proper comprises, preferably, asheet metal plate or disk 14% having an upwardly turned flange 15 at itsperiphery and within the latter a plurality of spaced cushioningelements, preferably in the form of hemispherical rubber studs 16secured in place on plate 14 by rivet members 17 or in any other wellknown or suitable manner. These studs are located for engagement withthe under side of the tray body 10 at its abutment means, for thepurpose of supporting the tray and also positioning it when placed onthe support and retaining it securely in such position in use. In thepresent instance the studs are located on a circle so as to engage theouter side of the tray flange 13 which fits snugly and securely withinthe circular studs, without coming in contact with the metal plate 14.The tray is thus not only securely retained in position but is cushionedby the rubber stud bodies to avoid the contact of glass on metal.

The tray support or plate 1 1 has secured at its center, as by means ofscrews or rivets 18, a hub 19 having a socket 20 in which is rotatablyreceived the upper end of a short spindle (not shown) carried by thefree end of the auxiliary arm 9. In this manner the tray and its supportare rotatably and removably secured on the supporting arm so that theymay be detached for cleaning or for replacement by other parts, as maybe desired.

It is apparent from the above description and drawings that the traybody 10 is not only eflectively supported and retained on a cushionedseat, but may be conveniently rotated in use to bring the. desiredinstruments into reach of the dentist and it may also be convenientlyremoved and replaced on its supporting means. The projecting flange 13not only serves to locate or center and retain the tray on its supportas de scribed above, but has the additional function. 01f; spacing thetray bodies. When a plurality of the latter are placed one uponanotheror stacked in, compact form forshipment, thereby preventingcontact of the peripheral edges of adjoining trays which would tend tochip and deface them.

The construction. of the tray and. its support is simple and convenientand durable incharacter, and therefore economical as-to. bothmanufacture and use.

Lclaim as my invention:

1. A dental apparatus comprising an in strument trayhaving av flangeprojecting from. its under side, and a. supportprovided with cushioningmeans disposed for engagement with the under side. of said tray atsaidflangeto supportsaid tray in position.

2.. A dental apparatus coinprising'an instrument tray having a flangeprojecting from its under side, and a; supporting plate provided Withspaced studs of cushioning materiald-isposed for engagement with theunder side'of said tray at said flange to support said tray in positionon said. plate.

3. A, dental apparatus comprising an inwith the. underside" of said;tray;- atv spaced; points about said flange to support; said tray in:position, and means for supporting.-

said. plate.

5, In. a dental apparatus, the: com binae tion. of. a. supporting.arm,disk. rotatably supponted-onsaid arm, ail-instrument tray havingcircularv abutment means. on, its.-

under side, and a plurality of elementsozf cushioning material disposed;on said disk:

for supporting and positioning; engagement with saidtra-y adjacent saidflange.

6 In a dental apparatus, the combination of an instrument tray, having;circular flange projectingfrom; itsunder side, a sup.- porting disk.provided. with cushioning elements in spaced relationthereonforengagement with the under. side of said tray adj acent said, flange,a'supporting arm, and means rotatably supporting said disk on. said arm.

osons; H. HELPER,

